Concrete-column mold.



. vPATENNED AEE. 7, 19031,v W.l A. STAPLES. CONCRETE COLUMN MOLD.

lAPPLICATION FILED JAN. 13. 190s.

No MOOEL.

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- UNITED STATES I PATENT OFFICE.

WILLIAM A. STAPLES, or INDIANAPOLIS, INDIANA.

if yCONCRETE-COLUMN`MOLD.

SPECIFICATION forming part of Letters Patent No. 724,754, dated April 7, 1903.

i Application filed January 13, 1903. Serial No. 138,887. (No model.)

To all whom it may concern,.-

Be it knownthat I, WILLIAM A. STAPLES,

'a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have 'invented certain new and means for the manufacture of concrete colfl umns for verandas, porticos, colonnades, in-

terior, exterior, and all kinds of architectural work; and the object of theinvention is to provide a compact and homogeneous column in a convenient and expeditious manner, also to provide a column with interior ventilation, and to provide means for handlingthe green column, so as to prevent breakage or mutilation in its tender and uncured state.

I accomplish the objects of the invention by the mechanism illustrated in the accompanying drawings, in which- Figure l is a side elevation of my improved mold for forming the shaft of a plain column; Fig. 2, a longitudinal central section of same; Fig. 8, a cross-section on the dotted lines 3 3 of Figs. 1 and 2; Fig. 4, an elevation and partial section of the column made in the molds shown in Figs. 1 and 2, the Iigure showing the column in inverted position, which isthe position during the process of manufacture. Fig. 5 is a plan, and Fig. 6 a side elevation, of the mold for forming the capital'ofv the column; Fig. '7, a vertical section of Fig. 6; and Fig. 8, a detail, on a larger scale, of the lower part of Fig. 7. Fig. 9 is a detail of the lower end of Fig. .2A on a larger scale. Fig. lO is a side elevation, Fig. 11 a vertical section, and Fig. 13 aplan view, of the mold for forming the base of the column, and Fig. 12 is a detail of the lower part of Fig. vl1 on a larger scale. Fig. 14 is a detail in perspective of the mold for forming the shaft, showing the device for locking the separable parts of the mold together. Fig. 15 is a perspective View of the cross-bars for securing the lower end of the chain by which the columnV is supported during the curing process after being taken out of the mold. Fig. 16 is a side elevation of a mold for forming the shaft of a uted column; Fig. 17,' a longitudinal central section of same; Fig. 18, a detail, on

a larger scale, of the lower end of Fig. 17; and Fig. 19, a cross-section on the line 19 19 of Figs. 16 and 17. Figs. 20, 2l, and 23 are plan, side elevation, and vertical central sections, respectively, of the mold for forming the capital of the uted column, and Fig. 22 is a detail, on a larger scale, of the lower end of Fig. 23 and is substantially the same as Fig. .8. l

Like letters of reference indicatelike parts throughout the several views of the drawings.

A is a suitable Iixed support, B a fixed platform above it, and C a tube rigidly secured between the platform and the said support A. Bol'ted to this tube are the brackets C', which form the supports for the hinges d of the mold D, in which the shaft of the column is formed. The mold for the plain shaft, .as shown in Figs. 1, 2, and 3, is in two pieces, which open on said hinges to discharge the finished shaft. The two parts of the mold when closed are locked together by means of thel fastenings, comprising an eyebolt E, pivoted between the ears e e of onemember of the mold and taking into a deep notch in the lug e of the opposite member of said mold, the threaded endof the bolt having the nut e2, which contacts with the outside of the lug e and draws ltheparts of the mold together when screwed up against said lug. This is shown in Fig. 14.- The bore of the mold tapersdownwardly, so thatthe shaft occupies an inverted position during its formation. The lower walls of the mold have the inside flange f (see Fie. 9) to support the removable plate F, which forms the bottom of the mold. u This plate has a central perforation surrounded by the angef to enter and center the tube Gr, which extends longitudinally of the mold. The mold thus completed is filled through its open upper end, and concrete filling is well tamped down as it is introduced. When a shaft the maximum length of the mold isr'equired, the

nlatter will be filled to the topfwith vthe welltamped concrete; but where lengths less than the maximum are required the desired length will be obtained by only filling the mold to IOO removed by unfastening and opening the two parts of the mold. The newly-formed and green shaft is supported by means of a chain II, the lower end of which is secured to the cross-bars h, placed under the plate F, the chain being passed thence up through the tube G and is made fast to any suitable support, which will preferably be a derrick-arm or a traveling block and tackle, (not shown,) whereby the shaft may be removed and supported until dry and hard. The plate and tube will remain until the shaft is cured, when they will be both removed, and to facilitate the removal of the tube it will be tapered.

The molds for the base and for the capital of the column are constructed in the same manner of a plurality of hinged sections, the interior formation being such as to give the desired shape to molded article, and the mold being suitably shortened to correspond with the length of said parts. The base, shaft, and capital will all have central registering openings, which permit interior circulation of air.

Figs. 16 to 19, inclusive, showa mold made in more than two sections or parts in order to enable the same to be removed from the luted column without marring the flutes of the latter. It will thus be seen that the number of pieces in a given mold will depend on the shape of the article to be produced in it, and I therefore do not wish to limit my invention as to the number of pieces in a mold.

Having thus fully described my invention, what I claim as new, and wish to secure by Letters Patent, is-

l. Molds for the purposes specified in a plurality of parts, said parts being hinged and fastened together to permit of being opened laterallyfrom the article formed therein for removal from said article,said mold having an interior opening with a downward taper and having an inside flange at the lower end of said opening, and a plate seated on said fiange to form a removable bottom or closure, said plate having a central opening and a removable tie secured to the bottom plate and extending thence up through the tube.

2. Molds for the purposes specified in a plurality of parts, said parts hinged and fastened together to permit of opening laterally from the article, said mold having a longitudinal central opening which tapers downwardly and terminates with an inside flange, a plate seated on said liange to form a remov able bottom, said plate having a central opening` and a tube surrounding the opening of the plate and extending longitudinally and centrally of the mold and a iexible tie, supported at its upper end, extending down through the tube and cross-bars below the bottom plate, to which the lower end of the tie is fastened.

3. Molds for the purpose specified in a plurality of parts, said parts hinged and fastened together to permit of opening laterally from the molded article, said mold having a longitudinal central opening which tapers downwardly and terminates with an inside flange, a plate seated on said flange to -form a removable bottom, said plate havinga central opening, a tube surrounding the opening ot the plate and extending longitudinally andl centrally of the mold and a removable tie secured to the bottom plate and extending thence up through the tube.

In witness whereof Ihave hereunto set my' hand and seal, at Indianapolis, Indiana, this 31st day of December, A. D. 1902.

WILLIAM A. STAPLES. [L. s]

Witnesses:

JOSEPH A. Mr NTURN, S. MAHLON UNGER. 

